Two-port amplifier model practice problems
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Read the Amplifier class notes.

For the amplifier circuit shown, R_S = 680 Ω, and R_L = 1.8 Ω.

For amp 1: R_i1 = 180 Ω, A₁= 5, R_o1 = 27 Ω.

For amp 2: R_i2 = 18 Ω, A₂= 5, R_o2 = 56 Ω.

For amp 3: R_i3 = 22 Ω, A₃= 5, R_o3 = 18 Ω.

For amp 4: R_i4 = 27 Ω, A₄= 20, R_o4 = 3.3 Ω.

If the amplitude of the input signal is v_i = 40 mV, find the amplitude of the amplified output singnal, v_o.

Answer